Mineralogy Database

Niggliite Mineral Data

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General Niggliite Information

Help on Chemical  Formula: Chemical Formula: PtSn
Help on Composition: Composition: Molecular Weight = 313.79 gm
   Tin       37.83 %  Sn
   Platinum  62.17 %  Pt
            100.00 % 
Help on Empirical Formula: Empirical Formula: PtSn
Help on Environment: Environment: In late-forming hydrothermal veins.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1937
Help on Locality: Locality: Waterfall Gorge, Insizwa, Griqualand, South Africa. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Paul Niggli (1888-1953), Professor at Zurich, Switzerland.
Help on Name Pronunciation: Name Pronunciation: Niggliite + Pronunciation Say NIGGLIITE
Help on Synonym: Synonym: ICSD 42593
  PDF 25-614

Niggliite Image

Click Here for Larger   Image in a New Browser Window Images:
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  Niggliite   Insizwaite

Comments: B&W image of a polished section showing insizwaite grain (I) showing details of niggliite (N) inclusions and exsolved chalcopyrite (C) lamellae in the pentlandite (P). (MinMag, v38:299).
Location: Insizwa deposit, Waterfall Gorge, Pondoland and East Griqualand areas (Transkei), South Africa. Scale: See Image.
© Mineralogical Magazine

Niggliite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:1.32473
Help on Cell Dimensions: Cell Dimensions: a = 4.111, c = 5.446, Z = 2; V = 79.71 Den(Calc)= 13.07
Help on Crystal System: Crystal System: Hexagonal - Dihexagonal Dipyramidal H-M Symbol (6/m 2/m 2/m) Space Group: P 63/mmc
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 1.486(1), 2.05(1), 2.15(1),

Physical Properties of Niggliite

Help on Cleavage: Cleavage: None
Help on Color: Color: Silver white.
Help on Density: Density: 13.44
Help on Diaphaneity: Diaphaneity: Opaque
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Hardness: Hardness: 3 - Calcite
Help on Luster: Luster: Metallic

Optical Properties of Niggliite

Help on RL Anisotrophism: RL Anisotrophism: Very high, bright pinkish cream to very dark blue or black.
Help on RL Color: RL Color: Silver white with a pinkish to bluish tint.
Help on RL Pleochroism: RL Pleochroism: Strong, from pinkish cream to pale cobalt blue.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Niggliite in Air
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 400 nm   52.40   55.00 
 420 nm   51.10   54.90 
 440 nm   49.80   54.80 
 460 nm   47.40   54.40 
 480 nm   46.60   55.00 
 500 nm   46.40   55.40 
 520 nm   45.80   55.90 
 540 nm   45.50   57.30 
 560 nm   45.40   58.90 
 580 nm   45.00   60.00 
 600 nm   44.30   62.00 
 620 nm   42.80   62.90 
 640 nm   41.10   64.40 
 660 nm   39.50   66.20 
 680 nm   37.70   67.20 
 700 nm   36.30   66.70 
Calculated Relative Intensity Colors of Niggliite in Air
   0%   30%   60%   90% 100% 120% 150% 180% 210%

Calculated Properties of Niggliite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=10.7 gm/cc
note: Specific Gravity of Niggliite =13.1 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.27
Boson Index = 0.73
Help on Photoelectric: Photoelectric: PENiggliite =1,114.75 barns/electron
U=PENiggliite x rElectron Density=11886.51 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Niggliite is Not Radioactive

Niggliite Classification

Help on  Dana Class: Dana Class: (01)Native Elements
  (01.02)with platinum group metals and alloys
  (01.02.10)Dana Group Niggliite PtSn P 63/mmc 6/m 2/m 2/m
Help on  Strunz Class: Strunz Class: 01.AG.60 01 - ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides)
  01.A - Metals and Intermetallic Alloys
  01.AG -PGE-metal alloys
01.AG.60 Niggliite PtSn P 63/mmc 6/m 2/m 2/m

Other Niggliite Information

Help on References: References: NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)
Help on See Also: See Also: Links to other databases for Niggliite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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Dana No: Strunz No: 01.AG.60





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